Getting SecurityException while securing JNDI using jnp.

Issue

While using org.jboss.security.jndi.LoginInitialContextFactory to secure JNDI,we get SecurityExceptions as stated below

env.setProperty(Context.INITIAL_CONTEXT_FACTORY, "org.jboss.security.jndi.LoginInitialContextFactory");
         env.setProperty(Context.PROVIDER_URL, "jnp://localhost:1099/");
         env.setProperty(Context.SECURITY_CREDENTIALS, "xxxxx");
         env.setProperty(Context.SECURITY_PRINCIPAL, "xxxxx");
         env.setProperty(Context.SECURITY_PROTOCOL, "logincontextname");




Exception in thread "main" java.lang.SecurityException: Unable to locate a login configuration
     at com.sun.security.auth.login.ConfigFile.<init>(ConfigFile.java:93)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
     at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
     at java.lang.Class.newInstance0(Class.java:355)
     at java.lang.Class.newInstance(Class.java:308)
     at javax.security.auth.login.Configuration$3.run(Configuration.java:247)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.login.Configuration.getConfiguration(Configuration.java:242)
     at javax.security.auth.login.LoginContext$1.run(LoginContext.java:237)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.login.LoginContext.init(LoginContext.java:234)
     at javax.security.auth.login.LoginContext.<init>(LoginContext.java:403)
     at org.jboss.security.jndi.LoginInitialContextFactory.getInitialContext(LoginInitialContextFactory.java:84)
     at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:667)
     at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:288)
     at javax.naming.InitialContext.init(InitialContext.java:223)
     at javax.naming.InitialContext.<init>(InitialContext.java:197)
     at Test.main(Test.java:45)
Caused by: java.io.IOException: Unable to locate a login configuration
     at com.sun.security.auth.login.ConfigFile.init(ConfigFile.java:250)
     at com.sun.security.auth.login.ConfigFile.<init>(ConfigFile.java:91)